15423531244120 has 128 divisors (see below), whose sum is σ = 35308964275200. Its totient is φ = 6062522305536.

The previous prime is 15423531244081. The next prime is 15423531244123. The reversal of 15423531244120 is 2144213532451.

It is a self number, because there is not a number n which added to its sum of digits gives 15423531244120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15423531244123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 850850497 + ... + 850868623.

It is an arithmetic number, because the mean of its divisors is an integer number (275851283400).

Almost surely, 2^{15423531244120} is an apocalyptic number.

15423531244120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15423531244120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17654482137600).

15423531244120 is an abundant number, since it is smaller than the sum of its proper divisors (19885433031080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15423531244120 is a wasteful number, since it uses less digits than its factorization.

15423531244120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19577 (or 19573 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 37.

Adding to 15423531244120 its reverse (2144213532451), we get a palindrome (17567744776571).

The spelling of 15423531244120 in words is "fifteen trillion, four hundred twenty-three billion, five hundred thirty-one million, two hundred forty-four thousand, one hundred twenty".